Oscilloscope Photographs Showing RF and Optical Waveforms Obtained from my Rife-Bare Unit

RF Envelope @ 50,000 Hz Modulating Frequency

This picture shows what the RF output from my power amplifier looks like when it is fed into a dummy load.  The carrier frequency is 27.12 MHz, and the modulation frequency is 50,000 Hz (50 KHz.)  Note that the shape of the square wave is still very good at this high modulation frequency.

Optical Waveform @ 1,000 Hz Modulating Frequency showing Optical Spike on waveform

This is the optical output waveform of my 30" Rife/Bare tube when modulated at 1,000 Hz.  Notice the large spike at the beginning of the light output from the tube at the start of each cycle.  This spike appears on every unit I have tested, and does not seem to be a function of the gas fill in the tube.  I believe it is related to the rapidly changing reactance of the tube at the start of gas ionization on each cycle.

Optical Waveform @ 20,000 Hs showing absence of Optical Spike

At a modulating frequency of 20,000 Hz, the optical waveform shows no evidence of the spike shown at lower frequencies.  This may be due to the inability of the gas in the tube to completely de-ionize between RF pulses.

Optical Waveform @ 50,000 Hz shows waveform degradation towards a Sine Wave shape

At a modulating frequency of 50,000 Hz, this is what the optical waveform from the tube looks like. Notice that it is beginning to approach a modified sine wave, although the amplitude of the wave is still good. This waveform can still transfer a substantial amount of energy into the target organism, although the overall harmonic amplitude is reduced from that of a square wave. Even at this frequency, the RF pulse being fed to the tube is still a good square wave.

RF and Optical Waveforms Compared @ 20,000 Hz Modulating Frequency showing Optical Spike

This photo shows two traces; the top trace is the optical waveform from the tube, and the bottom one is the RF field surrounding the tube. This photo shows an entire on - off cycle at a modulating frequency of 2,000 Hz.

Expanded View of RF and Optical Waveforms @ 20,000 Hz Modulating Frequency showing Optical Spike

This photo is an expanded view of the turn-on sequence of the tube shown in the photo, above. The horizontal scale is 100 Usec per division.  Note that the RF voltage actually begins to build up some 75 Usec before the first light begins to be visible from the tube.  As soon as the light curve begins to rise from zero, the RF field begins to decrease, indicating that the ionizing gas in the tube is beginning to draw power from the RF field surrounding the tube.  This rapidly changing load on the RF source is what causes the balun to go into non-linear magnetic regions of operation and overheat, even though the balun may be rated for much greater power levels than you are actually using.

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